Secondary valve



W. B. WOORE.

SECONDARY VALVE.

APPLICATION FILED APR.26, 1920.

1,383, 180, PatentedJune 28", 1921.

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UNITED STATES PATENT OFFICE.

SECONDARY VALVE.

Specification of Letters Patent.

Patented June 28, 1921.

Application :filed April 26, 1920. Serial No. 376,756.

To all whom t may concern:

Be it known that I, WALTER B. WORE, a citizen of the United States, and resident of New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Secondary Valves, of which the following is a specification.

The invention relates in general to a eutoff plug of the type in which an emergency secondary valve in a conduit is held olf its seat by the y positioning therein of a main valve faucet, plug or other valve unseating continuation of the construction, and in which the valve is seated automatically by the pressure of the fluid passing through the conduit and independent of springs or other movable parts which might deteriorate under conditions incidental to a long inactive use.

Specifically the invention relates to an improvement in secondary valves of the type disclosed in my pending application, Serial No. 327,7 66, renewed Oct. 1, 1919.

In certain situations where, for instance, there is a highvpressure flow in the conduit controlled by the structure, with the resulting rapid movement o-f the valve element, it is vitally important that the valve whenever set in motion should contact rmly and squarely with its valve seat. Under conditions of varying high pressures, the slightest canting of the valve in moving onto its seat would defeat the desired instantaneous closing of the conduit so desirable in organizations of the type under consideration.

Accordingly, one of the basic objects of the invention is to provide a simple form of secondary valve of the class described and in which the valve element is guided squarely onto its seat when free of the restraining effect of the valve unseating element. I attain this object broadly by engaging the free sliding valve at two spaced apart bearing .points preferably on opposite sides of the part of the valve which engages the seat.

Still another object of the invention is to provide a guiding structure which will at the same time limit the unseating movement of the valve, retain the valve in proximity to and oppositely disposed to its seat and in position immediately available to be forced onto its seat.

Still another object of the invention is to provide a device of the type disclosed in which the faucet or other coacting valve unseating element can engage the valve to secure the same against vibration and thus defeat any tendency on the part of the valve to Wear away the guiding member or its seat.

Variouscther objects and advantages of the invention will be in part obvious' from an inspection of the accompanying drawings and in part will be more fully set forth in the following particular description of one .form of mechanism embodying my invention, and the invention also consists in certain new and novel features of construction and combination of parts hereinafter set forth and claimed.

In the accompanying drawings Figure 1( is a View in axial section of a coupling constituting a preferred embodiment of my invention and operatively connected to a valve unseating member therein shown to be a faucet disposed in position Jp olding the valve structure in opened posi- Fig. 2 iS a view similar to Fig. 1 with the fautcet removed and the valve engaging its sea Fig. 3 is a View in side elevation of the val'yular structure shown in Figs. 1 and 2; an

Fig. 4 is a View in end elevation ofthe guiding ring shown in Figs. 1 and 2.

In the following description and in the claims, parts will be identied by specific names for convenience of expression but they are intended to be as generic in their application to similar parts as the art will permit.

In the drawings there is shown a coupling 10 of conventional form provided with a bore 11 positioned within which is an annular valve seat 12 facing in the direction of How of the fluid through the conduit which direction is indicated by the arrow in Fig. 1. The bore is threaded on opposite sides of the valve seat, the part 13 on the advanced side of the valve seat adapted to receive a valve unseating insert 14: herein shown to be a nipple constituting the intake pipe of a faucet 15. r1fhe threads 16 on the rear side of the seat 12 are engaged by an apertured guiding ring 17 which is .designed to be located and adjusted by a rotating tool engaging in apertures 18 to position the ring in any desired spaced relation to the valve seat 12.

There is also disclosed a unitary floating valve construction 19 (see Fig. 3) which in,-

cludes a conical valve proper 20 designed to engage theseat 12 and thus intercept the assage` of lthe fluid through .the conduit.

he valve construction includes guiding extensions 21 and 22 projecting from opposite sides of the valve 20. The extension 21 projects forwardly through and beyond the valve seat 12, in position to be engaged by the member 14 and disposed so as to be held by said member `in position to space the valve 2() a distance from the seat 12 just sufficient to provide a free passageway 23 about the valve as shown in Fig. 1.

The extension 22 is fitted within the bols 11 in the ring 17 so that the valvular con` struction is guided at two longitudinally spaced apartpoints, one provided by the inner edge 24 of the valve seat and the other provided by the ring 17. The extension 22 ie of hollow cylindrical form and has a rela tively large diameter so as to provide an ex tensive annular bearing surface. The exten` sion 22 is reduced from the diameter of the valve 20 to provide a stop shoulder 25 which engages the forward side of the ring 17 and is limited thereby in its unseating movement. The parts are so proportioned that the shoulder 25 is held firmly seated against the ring by means of the member 14 engaging the annular bearing faces 26 provided by the spaced apart arms forming the extension 21. Both of the extensions are provided with openings 27 to permit the passage of the fluid therethrough. y

In operation and noting the position of the parts as shown in Fig. 2, it will be un derstood that the pressure of the fluid will act on the valve to securely seat the same in fluid' tight engagement with the valve seat and the iiuid pressure acts on the entire rear faceiof the valve which is made as extensive as possible and is practically coextenlsJive with the cross sectlon of the threaded ore.

The insertion of the member 14.into posi-v tion engaging the threads 13'will cause the advancing edge of the member 14 to squarely engage the forward bearing surface 26 of the valvular construction to move the same axially of the bore and into engagement with the ring 17, in which position it is held by the engagementof the member 14 with the valve structure which in turn bears against the ring. The ring is positioned so as to hold the valve firmly in the desired spaced relation to its seat and the positioning of the ring in the bore will be controlled largely by the character of the inserted member 14. As soon as the member 14 is withdrawn, the pressure of the fluid acting not only through vthe openings 18 but also acting axially against the central, major portion of the valve causes the same to snap quickly and positively onto its seat. The valve is guided 1n its seating position by its engagement with both the valve seat andthe rearwardly spaced guiding rings so that canting of the valve as it is moved into position is largely eliminated.

By means of a device of this character it is possible to provide a secondary valve which in normal operation is held in fixed position spaced from but closevto the valve seat immediately available to move promptly onto its valve seat as soon as the valve unseating element is removed from the cou- .pling lVhile I have shown and described, and have pointed out in the annexed claims, certain novel features of my invention, lit will be understood that various omissions, substitutions and changes in the form and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention.

bHaving thus described my invention, I claim:

1. A coupling constituting an article of manufacture provided with a valve seat, a valvular structure including a valve adapted to be normally closedonto said seat by the pressure of the fluid in the coupling, said valve provided with guidingmeans having forwardly extending portions extending through and beyond said seat -in position and adapted to be engaged by a coupling-engaging element for positively holding the valve in spaced relation to its seat, said valve also provided with guiding means comprising a rearwardly extending portio'n and means limiting the unseating movement of the' valve and engaging said rearwardly extending portion for insuring `r a proper seating of .the valve.

2. In a device ofthe class described, the

combinationv of a conduit having two longitudinally spaced apart apertured partitions in the bore thereof, one o f said partions provided with a valve seat, and facing the other partition and facing in a direction opposite to the direction of flow through the conduit, a floating secondary valvular device including a valve element adapted to be moved by the pressure of the flow on to said seat to intercept the iow throu h the conduit, and extensions for guiding t e valve element to and from its seat, said extensions rojecting longitudinally from opposite si es of the valve element and slidably mounted in and extending through the apertures in said partitions and a second conduit inserted in the first named conduit and adapted to engage the adjacent exten-4 sion to hold the valve element in spaced relation toits seat and thus permit a flow combination of a conduit having two longitudinally spaced apart apertured partitions in the bore thereof, one of said partitions provided with a valve seat and the other partition provided with an aperture to permit the passage of fluid therethrough, a floating secondary valvular device including a valve element positioned between said partitions andv adapted to be moved by the pressure of the fluid onto said seat to intercept the iow through the conduit, and

extensions for guiding the valve element to `lar valve seat in the bore, said bore being threaded on opposite sides of the seat, va guiding ring engaging the threads on one side of the seat and constituting a stop for limiting the unseating movement of a coacting valve and the threadson the other side adapted to receive a valve unseating member, and a valvular structure including a valve for'engaging said seat to close the bore and provided with an' extension slidably mounted in said rin and guided thereby to effect a seating o the valve on said seat when free of the valve unseating member.

5. In a device of thel class described, the combination of a member provided with a bore, a valve seat in said bore, a floating valve structure including a valve adapted to be normally closed onto said seat by the pressurey of the Huid in said bore and provided with an extension adapted to be engaged by an insert introduced into the bore for holding the valve in unseate'd position, and guiding means for the structure adjustable relative to the seat to insure a proper seating of the valve and to limit the retreat of the valve away from said seat under the influence of said insert.

6. In a device of the class described, the combination of a conduit provided with a valve seat, of a valve adapted to it said seat and adapted tofbe forced onto said seat by the fluid pressure in said conduit, a second conduit distinct from. the first named conduit and adapted .to bear on the valve and thus hold the valve oif its seat and means adjustable relative to the seat for guiding the valve in its closing movement j onto its seat.

vSigned at New York city, in the county of New York and State of New York', this 9th day of April, A. D. 1920.

WALTER B. VVOORE. 

